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Mathematics 18 Online
OpenStudy (omgthatgirl):

Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. -2y^2+6y=-2 a. -3.3, 0.3 b. -11.5, 14.5 c. -0.61, 6.61 d. -0.3, 3.3

OpenStudy (omgthatgirl):

help

OpenStudy (anonymous):

This will show the answer, and how to work it out. Scroll down to the bottom to see the answer on the number line.

OpenStudy (anonymous):

On the number line, you can see that -0.3 and 3.3 are plotted.

OpenStudy (omgthatgirl):

How about this one x^2-5x=12 a. 6.77, -1.77 b. 2.4, 4.27 c. 20.75, -15.75 d. 5.58, -0.58

OpenStudy (anonymous):

Subtract 12 from both sides of the equation. It becomes- x^2-5x-12 Plug these values into the quadratic formula and solve. http://www.wolframalpha.com/input/?i=Use+the+quadratic+formula+to+solve+x%5E2-5x-12 The link will show you the answer and how to solve it.

OpenStudy (anonymous):

On the number line, the points 6.77 and -1.77 are plotted.

OpenStudy (omgthatgirl):

Ok thanks so much

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